<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>赋值运算符</title>
</head>
<body>
<script>
    let num = 2
    num = num + 2
    console.log(num)
    // 赋值运算符的简写
    let franchise = 3
    franchise += 3
    console.log(franchise)
</script>
</body>
</html>